Compound probiotics as well as production process and application thereof to leavening agent

Abstract

The invention provides compound probiotics as well as a production process and an application thereof to a leavening agent. The compound probiotics are obtained as follows: strains with strong tolerance and excellent fermentation performance are combined and proportioned to prepare the dry powder of probiotics by virtue of strain activation and cultivation, fermentation, separation and vacuum low-temperature drying; and then the dry powder of probiotics is compounded and packaged to obtain the complex probiotics. A continuous vacuum low-temperature drying process is adopted, the period is shortened and the yield is improved; and the complex probiotics comprises lactobacillus plantarum, lactobacillus fermentum, lactobacillus casei and lactobacillus rhamnosus in a ratio of (2-8) to (1-6) to (1-4) to (1-3); during application, every ton of vegetable can be well fermented within 3-5 days by use of 0.2-1kg of the leavening agent at a fermenting temperature of 20-30 DEG C, wherein the fermentation time is shortened by 50% in comparison with that in the conventional method, the yield of the salted and preserved vegetable is over 75%. The multipurpose probiotics leavening agent prepared by the production process disclosed by the invention can be used for the vegetable fermenting industry and the feed fermenting industry, so that a realistic problem in agricultural production and a food processing process is solved; and meanwhile, the product quality and the production efficiency are improved.

Description

technical field [0001] The present invention relates to a biological product, in particular to a multi-purpose probiotic starter. Specifically, the present invention also provides the production process of the composite probiotic. In particular, the present invention also provides the preparation of the composite probiotic on the starter. The application belongs to the field of biotechnology. Background technique [0002] Probiotics are a class of active microorganisms that are beneficial to the host. They are a general term for active beneficial microorganisms that colonize the intestinal tract and reproductive system of humans or animals and can produce definite health effects to improve the host's micro-ecological balance and exert beneficial effects. Among them, lactic acid bacteria are a relatively common type, which are widely used in the fields of bioengineering, breeding, health food and biomedicine. Probiotic microecological preparations have great development pote...

AI Technical Summary

Problems solved by technology

[0007] At present, the fermentation process of probiotics is relatively complicated, and the strains used in fermentation are relatively single, and there are relatively large limitations in application. The existing market products and technologies mainly have the following deficiencies:

[0008] 1) The single product contains few types of probiotics, and no enzyme preparation is added;

[0009] 2) Most of them are liquid, which is very inconvenient for transportation and storage, and at the same time, it is easy to lose activity and cause fermentation failure;

[0010] 3) Some with single function are only used for kimchi fermentation, while some are only used for feed fermentation;

[0011] 4) The fermentation process is relatively complicated and requires high technology;

[0012] 5) The energy consumption of the existing freeze-drying process is high, resulting in high cost, and the activity of the spray-dried bacteria is low, and the yield is low;

[0013] 6) The safety is poor, especially in feed fermentation, spores and yeasts are mostly used, and the starters using lactic acid bacteria are less, and the safety of spores and yeasts is not as good as lactic acid bacteria, and the colonization performance in animals is poor, and the probiotic effect is poor

The product yield of freeze-drying process is high, only need ultra-low temperature under vacuum, the equipment is expensive, and the energy consumption is very high at the same time, resulting in high production cost of bacterial powder

Spray drying has the advantages of simple process and low equipment investment, but because spray drying is carried out at a relatively high temperature, and the highest temperature resistance of probiotics is only 50°C, the activity of products obtained by spray drying is extremely low, and most of them are dead bacteria

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